Deep-well pump



'March 9,1926.

W. A. MINOR 'DEEP WELL PUMP Filed Nov. l,

INVENTQR.

ATTORNEYS.

Patented Mar. 9,v 1926,

Unirse srares ariane Parser Free.

WILLIAM A. IVINOR, F ROCHESTER., NEW" YURK, ASSGNOR TO LUITNEILER PUMP-ING ENGINE J.COllfllPAhTY, F ROCHESTER, NEVI YORK, A CORPORATIONAZbl'lFLlVl i YORK. i

Duur-WELL PUM?.

' Application filed November 1, 1324. Serial No. 747,238.

To aZZ whom t may concern."

Be it known that I, lWILLIAM A. MINOR, a citizen of the United States,and resident of Rochester, in the county of Monroe and State of NewYork, have invented certain new and uscful- Improvements in Deep- WellPumps, of which the following is a specification.

The present invention relat-es to deep well pumps and more particularlyto the type in which two pistons or buckets are operated in a cylinderthrough the mediums of rods, one of which is hollow and operates theupper piston or bucket and the other of which extends through the hollowrod for effecting the operationof the lower piston or bucket, theoperation of both pistons being effected through a mechanism arranged atthe top of the well. An object of this in vention is to prevent theformation in the hollow rod of a column of water which will retard thefreemovement of the rods operating the two pistons or buckets. Anotherobject is to eliminate the packing at the lower end of the hollow rodAand reduce the strain on the packing at the upper end.

To these and other ends, the invention consists of certain parts andcombinations of parts, all of whichwill be hereinafter de scribed: thenovel features being pointed out in the appended claim.

In the drawings:

Fig. 1 shows in elevation a pump operating mechanism with the upperportion of the pump in fragmentary section;

Fig. 2 is a fragmentary section through the lower portion of the pump;and

Fig. 3 is an enlarged fragmentary view of one-half of the pump adjacentthe upper bucket or piston.

Referring more particularly to the drawings, 1 indicates a pumpoperating mechanism which may be of any suitable construction, thatshown embodying a wellknown construction having two sliding heads luoperated by rotating cams 1b. This operating mechanism is supported on abase 2 which is partially embedded in the ground and from which extendsdownwardly the outer casing 8 of the pump. Arranged concentricallywithin this outer casing is the cylinder 4 having the outlet 5 at itsupper end and a strainer 6 at its lower end,` this cylinder being formedof a number of seca `tions connected by coupling "Z, the lower section4a in whichthe pistons operate being of a slightlyv smaller diameterthan the other sections, so that the pistons may be readily movedthroughthe upper sections and will lit tightly in the lower sections 4a. The

`pistons or buckets `which operater in--the -portion 4a of the cylinderyare .indicated at 8 and 9, respectively, the piston Shaving a valve 10and the piston 9 having a valve 11. EX- tending upwardly from the piston8 through the valve 11 and the cage 14 of the upper bucket is a rod 12formed of sections with couplings 13 connecting said sections, the upperend of this rod being connected to a slide 1L of the operating mechanism1 so that a reciprocation of the lower bucket is ef# fected. To the cage14 of the upper bucket a hollowrod 15 is connected, this hollow rodbeing formed with sections connected by couplings 16 'and being securedat 17 to the other slide 1b of the pump operatingmechanism 1, wherebythe hollow rod 15 is given a recipro'catory motion. A packing 18 isarranged at the upper end of the hollow'rod 15 to prevent the escape ofwater through the upper end of this hollow rod.

Prior to this invention the hollow rod 15 has been closed to the spacein the cylinder 4 about said rod and as a consequence water has leakedinto the hollow rod about the rod 12 at the point where said rod passesthrough the cage 14 of the upper bucket. When this water has accumulatedto any Y great eX- `tent, as it will eventually, the couplings 13 on therod 12 have a plunger action on such accumulatedwater, and, as aconsequence, the relative movement of the rods operating two buckets orpistons is interfered with. This has been particularly inconvenient, rasit has required the drawing of the two pistons and the rods in order toeect the re moval ofthe accumulated water in the hollow rod.

These disadvantages are overcome in the present invention by providingthe hollow rod 15 and its couplings with openings 4b at different pointsthroughout its length, thereby providing communication between thehollow rod 15 and the chamber in the cylinder 4. By having the hollowrod 15 communicating with the chamber of lthe cylinder 4 above the upperpiston, there is a free flowing of the' water from and to the chamber,and, as a consequence, when the rod 12 with the couplings 13 move up anddown in the hollow rod 15 the water through the couplings is eitherdrawn into the hollow rod 15 or forced from said rod. This inventiondoes away with the necessity of removing the pistons or buckets withtheir operating rods after a certain length of time Jfor the purpose ofclearing the hollow operating rod of water. Furthermore, the strain onthe upper stufng box is reduced to a minimum and the pressure on bothstrokes is uniform. Operating difiiculties such as rod buckling iseliminated and the necessity of having a packing in the cage 14 of theupper bucket about the rod 12 is done away with as well as the necessityof repairing such packing. kA. greater pumping speed wtih fullerdischarge and higher mechanical 20 eliiciency is obtainable.

That I claim as my invention and desire to secure l y Letters Patent is:

A deep well pump comprising a cylinder having a discharge at its upperend, two pistons operating in the cylinder, each provided with a valve,and two rods, each connected to one of the pistons, the rod connected tothe uppermost piston being' hollow throughout its length and extendingto the top of the pump above the discharge opening and having openingsat dierent levels communicating with the cylinder below the dischargeoutlet of the pump and above the uppermost piston to provide a free flowbetween the interior of the hollon7 rod and the chamber of the cylinderabove said uppermost piston to permit a free surging action throughoutthe length of 'the hollow rod.

VILLIAM A. MINOR.

